Layer breeding companies apply selection criteria to improve over 30 traits important for
commercial egg production. Intensive selection for egg production over the decades has …

Genetic selection for earlier sexual maturation and extended production cycles in laying
hens has significantly improved reproductive efficiency. While limited emphasis has been …

The objective of the current study was to investigate different approaches for handling
missing records and to develop and implement a multivariate longitudinal mixed model for …

Heritabilities of size traits and growth rate traits, as well as genetic, phenotypic and
environmental correlations were estimated at three ages for a captive population of Pacific …

The random regression model (RRM) methodology was applied to the estimation of genetic
parameters for cumulative egg numbers and monthly egg production in a broiler dam line …

We estimated the heritabilities and genetic correlations for reproductive traits and egg
composition in female shrimp, Penaeus (Litopenaeus) vannamei. The traits under analysis …

1. We investigated the use of monthly production records for genetic evaluation of laying
hens, derived from a test day model with random regression in dairy cattle and compared it …

Although a number of single loci have been identified, genetic backgrounds of a majority of
poultry performance traits are still explained by the probability approach. Generally, three …

Random regression models (RR) have become a popular methodology for the genetic study
of longitudinal data since the last decade. The first objective of the current study was to …

Almaco jack, Seriola rivoliana as well as some related species is of great interest in marine
fish aquaculture. However, there are few studies about their reproduction in captivity. In this …